Elevator door



1,624,964 W. G. MILLER ELEVATOR DOOR 2 Sheets-Sheet 1 u v .mm m X m l l @v w M k 7/ m p 11.11.1211, 3mm? JT A m: L', 11T--. O O O o o o o e740/8W? o w o o April 1,9 2,1927.

Filed July 18, 1925 Y'April 19, 1927'.

ELEVATOR DooR Filed July 18, 1925 2 Sheets-Sheet 2 ance-nio@ mima/mz Patented Apr. 19, 1927.

ES` Pai-Eur ori-fica..

ELEVATOR DOOR.

Application filed JulyV 18, 1925.

l'This invention relates to doors, and i'e-r lates particularly -to vertically'slidable elevator doors ot' the so-cal-led pass type.

A well known door construction to which the invention isapplicab'le comprises a pair of doors, meeting when closed midway ofv the height of a-door-Way, slidable from each other in their. opening' movement, andconnected in a counter-balanced relation.

lt is an object of ythe invention to provide a. novel track construction for guiding a series ot pass-7 type doors and retaining suchy doors in;open or closed position, and

Ltor .effecting the: necessary in or out movement of such a door, at onel ioor, as will when being'opened or closed, avoid interf terence withdoors at adjacent floors.

kfurther object is to provide co-acting members upon a sliding door other than its track-engaging,rollers or the like, which in acertain position of the door will engage a projectionicarried by the track, for positively initiating a desired actuation Aof the door transverse-to. its mainv direction oi sliding travel.

`These rand, various other objects the Yin-lven-tion attainsV bythe construction hereinafter .describedf and illustrated in the accompaiiying drawings, wherein:

Eig. l Ais aview infront elevation of apair of pass typeY elevator doors equipped with the .herein described.. improved. tracks, showin?? ASaid doorsL in closed7 position.

. Fig. 2 is; across sectional. view of" the Fig.. 3vk is: a vertical4 sectional" elevationV r Fig.. l is asimilar view, sectional'ly show-g ing thedoorsin their open position.

Fig.5 is a fragmentary view showing how= thelower' end `of the lower door is positively moved? outwardly inva certain position ol'i said'. door. v

f lnfthese views,vthe'reference characters 1E and. 2Vv designateupper and lower paired doors. adapted', as willv presently appear, to Y slidevertically tor -andrfrom veach other.

Each-,of said-doorsis provided, at its upper:

and lower ends, with-.pairs of guide rollers 3, journal'edvupon pinsv t projecting from the-vertical edges ot the doors, :said pins being preferably-carried by. l-shaped brackets.

Serial No. 44,47*?.

5 which embrace the doors, and are rig-'idly secured thereto bysuitable bolts 6.-y

rhe rollers 3 engage a pair of track inembers 7 which extend vertically, one'at each sid'e 'of the doorway, and each'oie said tracks comprises Vtwo flanges 8v and` S, between which the correspondingv rollers 3 are guided'. The track members 7 extendv .cont-inuoiisly throughout substantially the entire length ot the elevator shaft so as tocoact vwith a vseries of doors located at the-.various of ythe i unit, andY terminating in= verticali alignment with' the ends of' the? unit. Fig:

"When the doors are in.. anfopen position, said4 rollers occupy the vertical portions olfthe.. guideways formed `by the llanges` 8 and'Sf". n

Upon the adjoiningends of the doors 1l andl 2,-bars 13 are rmounted which project terminally slightly beyond the. doors for engagement byzthe ends of counter-balancing chainsv 1st,.r passing over cha-in wheels 15, mounted'. in brackets 16 carried'at a suitable (See.

elevationfby the'tracks' 7. The two Adoors thus being counterbalanced, one by the other, it. requires only a Vslight effort to actuate them vertically.

Preferably the lower portion otf the lower doory 2- carriesV av pair ot'sheet metal cam strips 17 spa'ced. from the inner :tace ofthe lower edge portion ot' said doorland inclining toward said tace as'theyeirtend upwardly. Thensaidr-door is being closed, said-cani stripsengage a pair. of projectingV lugs 18 uponl the flanges-8, and vthus-deflect the lower end of the. door' toward` the landing', `so, as to assureengagement of the llower-pair of rollers 3 'on said door in lthe upper. pockets 12 of the guide unit.

Upon the flange 8a of each guide unit, between the pockets 12 of said unit, there is provided a lug 19 which projects into the door opening and is cngageable by the outer face of' either door guided by said unit, ,in the opening movement of said door, to prevent a lower roller of a lower door from entering a lower pocket 12, or to prevent the upper roller ot' an upper door from entering an upper pocket 12.

Vhat l claim is 1. The combination with a sliding door, of guide rollers carried by said door, and spaced thereupon in the direction of travel of the door, of a track member engaged by said guide rollers, said track member having a portion slightly divergent to its length for receiving one of said rollers in the closed position of the door, and coacting members carried by the door and the track member independently of said rollers for compelling travel of the last mentioned guide roller into said divergent portion of the track when such travel is in the direction of divergency of said portion.

2. The combination with a sliding door, of a pair of guide elements carried by said door and spaced in its direction of travel, and a track engaged by said guide elements having a channel-shaped guide unit for receiving said elements, and an end portion of said unit being slightly divergent to the length of the unit to accomplish a lateral travel of one of said guide elements and a corresponding end of the door when the latter undergoes sliding travel, and one or" the flanges of said track forming a U-shaped pocket extended parallel to said divergent end portion and engageable by the other of said guide members to effect a corresponding travel of the other end portion of the door.

3. The combination with a sliding door and a pair of guide elements carried by said door at one of its lateral edges, of a track member comprising a pair of flanges between which said guide elements are movable, said flanges meeting at corresponding ends to close the guide channel formed by said flanges and having their portions adjacent to said closure acutely inclined to the length of the channel to receive one of said guide elements, said channel being further formed intermediate of its length with a terminally closed pocket acutely inclined to the length of the track member in substantial parallelism to the first mentioned inclined portion, said pocket being adapted to receive the other of said guide elements.

4. The combination with a sliding door and a pair of guide elements carried by said door at one of its lateral edges, of a guide channel receiving said guide elements, and comprising a pair of parallel flanges, said track member further comprising a terminally closed branch guide channel extending from one of said flanges and acutely inclined to the main guide channel, a projection upon the other flange substantially opposite the entrance to said pocket, and a cam member upon the door in an exterior relation to said guide channel engageable with said projection to deflect said guide element toward the entrance of said pocket.

5. The combination with a track member forming a main channel and forming a pair ot' branch channels diverging acutely from said main channel, of doors mounted upon said track members, guide elements upon said doors engaging in channels of said track member, and a projection upon said track member between said divergent branch channels engageable by a side face of one of said doors to restrain the gnide element on said door from entrance into one of said branch channels.

6. The combination with a sliding door, of a pair of guide elements carried by said door and spaced thereupon in its direction of travel, a track member forming a channel adapted to receive said guide elements, said track member having a portion divergent to its length for receiving one of said guide elements in the closed position ot the door and said track member being formed with a pocket opening from said channel and eX- tending in substantial parallelism with said divergent portion of the track for receiving the other guide element in the closed position of the door, and a pair of' co-acting members 'for shifting the last mentioned guide element into said pocket, one of said members being mounted upon said door independently of said guide element and the other being mounted upon the track member adjacent to said pocket.

7. The combination with a sliding door, of a pair of' guide elements carried by said door and spaced thereupon in its direction of travel, a track member forming a channel adapted to receive said guide element, said track member having a portion divergent to its length for receiving one of said guide elements in the closed position of the door, and said track member being formed with a pocket opening from said channel and extending in substantial parallelism with said divergent portion of the track for receiving the other guide element in the closed position of the door, a member carried by said track member projecting therefrom in the direction of channel flanges and extending beyond said flanges and a projection carried by the door extending beyond a side face of said door to engage said projection on the track member to deflect the door transversely to its thickness and thereby enter the last mentioned guide element in said pocket.

8. The combination with two sliding doors located at adjacent floors of' a building and adapted to overlap when one thereof is opened, of a guide element carried by the lower portion ot the upper door, a guide element carried by the upper portion of the lower door, a track member forming a channel in which said guide elements are adapted to travel, said track member being formed with a pair ot pockets opening from said channel, and diiferging from the channel, one upwardly to receive said guide element of the upper door` and the other downwardly to receive said guide element oi' the lower door, and a common means carried by the track member for restraining the guide element on the upper door i'rom entry into the downwardly divergent pocket and for restraining the guide element on the lower door from entry into the upwardly divergent pocket.

9. The combination with two sliding doors located at adjacent floors of a building and adapted to overlap each other when one thereof is opened, of a guide element carried by the lower portion ot the upper door, a guide element carried by the upper portion of the lower door, a track member cornprising flanges forming a channel in which said guide elements are adapted to travel, said track member being formed with a pair of pockets opening from one flange of said channel and diverging from said flange, one upwardly to receive said guide element of the upper door and the other downwardly to receive said guide element of the lower door, and a projection upon the last named ilange of said channel between said pockets engageable by both of said doors to restrain the guide element of the upper door from entry into the downwardly divergent pocket and to restrain the guide element of the lower door from entry into the upwardly divergent pocket. l

l0. The combination with a sliding` door, ot a pair of spaced guide element-s upon said door, a track member engaged by said guide elements, having parallel spaced portions slightly divergent to the length of the track member and respectively engageable by said guide elements to actuate the door in or out during its sliding travel, a cam member carried by the door independent of said guide elements, and projecting beyond a side face of the door, and a projection upon the track member adjacent to one of said divergent portions extending into the path of travel of said cam member, and adapted by engagement with said cam member to shift the door transversely to said side tace and to thereby engage one oi said guide elements with the divergent portion ot the track member, to which said projection is adjacent.

In testimony whereof I sign this specification.

WILLIAM G. MILLER. 

